Discusses restoration methods for deteriorated documents and provides brief account of the principal causes of the deterioration of American documents written on paper. Contents: Deterioration resulting from ink; Deterioration resulting from papermaking practices; Deacidification of documents; Effect of deacidification on ink; Deacidification for documents not yet deteriorated; Lamination with cellulose acetate film and tissue; Natural ageing of laminated documents; Storage of laminates; Conclusions; Appendix I (List of record-depositories with equipment developed in the writer's laboratory); Bibliography; Colophon. -- AATA